Published:January 01, 1959
As is the case with most works of this nature, many people have contributed substantially to the data presented here. It is impossible to thank all of the students, professors, and professional geologists who have contributed so much. Some of the larger contributions are noted.
The Revolving Fund of the Pacific Section of the American Association of Petroleum Geologists made a most generous grant of money which supported the majority of illustrations of the Lower Tertiary Foraminifera. Mrs. M. B. Rowan and Dr. Virgil S. Mallory furnished much of the financial support to this project during its early phase. Additional monetary support was supplied by research funds of the Department of Paleontology of the University of California and by a fellowship in paleontology granted the writer by the Standard Oil Company of California for the year 1951–1952.
Dr. R. M. Kleinpell, of the Department of Paleontology at the University of California, Berkeley, supervised and directed the research of the writer while a student at Berkeley, and has been invaluable as a critic and friend. Dr. J. Wyatt Durham has contributed much stratigraphic and paleontological information of value.
Further indebtedness to Boris Laiming is felt by the writer not only for his directing attention to the Media Agua Creek section as a key sequence for study, but also for other assistance, encouragement, and information. Jack Bainton of the Standard Oil Company of California has assisted in the preparation of many hundreds of samples collected by the author, and by his critical
Figures & Tables
Lower Tertiary Biostratigraphy of the California Coast Ranges
As a result of field work carried on in 1947 a sequence of foraminiferal samples were collected in 2,300 feet of Lower Tertiary mudstones, siltstones, and interbedded shales and sandstones in the vicinity of Media Agua Creek, in the Temblor Range on the west side of the San Joaquin Valley.
Foraminiferal samples from another less comprehensive sequence of Lower Tertiary strata were collected during the years 1947, 1948, and 1949 in the region of Devils Den.
The prepared samples were studied during the years 1947–1952 in the Department of Paleontology at the University of California under the direction of Dr. Robert M. Kleinpell. Subsequent work both in the field and laboratory has been directed toward obtaining as complete and chronologically diagnostic a faunal sequence throughout the Lower Tertiary in the California province as possible.
Preliminary results of certain phases of the investigation have been presented from time to time at meetings of the Pacific Section of the American Association of Petroleum Geologists, San Joaquin Valley Geological Society, Cordilleran Section of the Geological Society of America, and the Northwest Geological Society (Mallory and Boyd, 1949; Mallory, 1953a, 1953b, 1954a, 1954b). This paper attempts a synthesis and revision of these reports and their conclusions, and the incorporation of many new data.
The majority of species known to be important in the Paleogene foraminiferal faunas are figured and their stratigraphic distribution in the California province is noted. In addition, an attempt has been made to draw any inferences from all kinds of fossil